212231023422 has 32 divisors (see below), whose sum is σ = 475564362624. Its totient is φ = 62574256800.

The previous prime is 212231023369. The next prime is 212231023439. The reversal of 212231023422 is 224320132212.

It is a junction number, because it is equal to n+sod(n) for n = 212231023392 and 212231023401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43451904 + ... + 43456787.

It is an arithmetic number, because the mean of its divisors is an integer number (14861386332).

Almost surely, 2^212231023422 is an apocalyptic number.

212231023422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212231023422 is an abundant number, since it is smaller than the sum of its proper divisors (263333339202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212231023422 is a wasteful number, since it uses less digits than its factorization.

212231023422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86908744.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 212231023422 its reverse (224320132212), we get a palindrome (436551155634).

The spelling of 212231023422 in words is "two hundred twelve billion, two hundred thirty-one million, twenty-three thousand, four hundred twenty-two".